(19)

(11)

EP 3 834 002 A2

(12)

(88) Date of publication A3: 06.08.2020 (43) Date of publication: 16.06.2021 Bulletin 2021/24 (21) Application number: 19836131.3 (22) Date of filing: 08.11.2019

(51) International Patent Classification (IPC):  G01S 7/481(2006.01) G02B 6/26(2006.01) G01S 7/499(2006.01) (86) International application number: PCT/US2019/060633 (87) International publication number: WO 2020/097574 (14.05.2020 Gazette 2020/20)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 09.11.2018 US 201862757987 P (71) Applicants: The Charles Stark Draper Laboratory, Inc. Cambridge, Massachusetts 02139 (US) Byrnes, Steven J. Cambridge, MA 02139 (US) Spector, Steven J. Cambridge, MA 02139 (US) Moebius, Michael G. Cambridge, MA 02139 (US)

(72) Inventors: BYRNES, Steven J. Cambridge, Massachusetts 02139 (US) SPECTOR, Steven J. Cambridge, Massachusetts 02139 (US) MOEBIUS, Michael G. Cambridge, Massachusetts 02139 (US) (74) Representative: Lucke, Andreas  Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22 80336 München 80336 München (DE)